java mvc 导入_Java SpringMVC文件导入和导出
J示例代碼:
@ResponseBody
@RequestMapping(value = "/fileUpload", method = RequestMethod.POST)
public void uploadFile(HttpServletRequest request, HttpServletResponse response) throws Exception {
Map map = new HashMap();
PrintWriter writer = null;
String orgfilename = "";
String dataRandomNum = request.getParameter("dataRandomNum");
String filePath = "";
String path = Toolkit.getConfigValue("bd.sys.config.lzzb.filepath","C:\\Users\\Administrator\\AppData\\Local\\Temp\\HeiFei");
filePath = path+"\\"+dataRandomNum;
MultipartHttpServletRequest mhsr = (MultipartHttpServletRequest) request;
//(根據前臺的name名稱得到上傳的文件)
Iterator isFiles = mhsr.getFileNames();
while (isFiles.hasNext()) {
MultipartFile file = mhsr.getFile(isFiles.next());
String fileNames = file.getOriginalFilename();
orgfilename = fileNames;
File headPath = new File(filePath);// 獲取文件夾路徑
if (!headPath.exists()) {// 判斷文件夾是否創建，沒有創建則創建新文件夾
headPath.mkdirs();
}
OutputStream out = new FileOutputStream(new File(filePath, fileNames));
InputStream in = file.getInputStream();
int length = 0;
byte[] buf = new byte[1024];
while ((length = in.read(buf)) != -1) {
out.write(buf, 0, length);
}
in.close();
out.close();
/** 將上傳處理后的數據返回 **/
map.put("orgfilename", orgfilename);
map.put("filepath", (filePath + "\\" + orgfilename));
map.put("success", 200);
map.put("code", "200");
}
response.setContentType("text/xml; charset=UTF-8");
response.setHeader("Cache-Control", "no-cache");
response.setHeader("Pragma", "no-cache");
writer = response.getWriter();
String msg = JSON.toJSONString(map);
Boolean returnB = cyanobacteriaWeeklyService.insertCyanobacteriaWeeklyData(filePath);
if(returnB) {
map.put("data", "插入成功！");
}else {
map.put("data", "插入失敗！");
}
writer.print(msg);
}
@ResponseBody
@RequestMapping(value = "/exportFile")
public void exportFile(HttpServletRequest request, HttpServletResponse response) {
String startTime = request.getParameter("startTime");
String endTime = request.getParameter("endTime");
//省略數據處理
//獲取運行環境路徑
java.net.URL uri = this.getClass().getResource("/");
String filePash = uri.getPath();
filePash = filePash.substring(1, filePash.indexOf("WEB-INF"))+"resources/file/藍藻藻情報告_20200708.docx";
//render
XWPFTemplate template = XWPFTemplate.compile(filePash).render(dataMap);
OutputStream out = null;
try {
String fileName = year+"年"+month+"月巢湖藍藻藻情報告.docx";
//1、設置response 響應頭
response.reset();
response.setCharacterEncoding("UTF-8");
response.setContentType("application/octet-stream");
response.setHeader("Content-Disposition","attachment;fileName="+URLEncoder.encode(fileName, "UTF-8"));
//3、 寫出文件--輸出流
out = response.getOutputStream();
template.write(out);
template.close();
out.close();
} catch (FileNotFoundException e) {
LOGGER.error(e.getMessage());
} catch (IOException e) {
LOGGER.error(e.getMessage());
}finally {
try {
if(template != null) {
template.close();
}
} catch (IOException e) {
LOGGER.error(e.getMessage());
}
try {
if(out != null) {
out.close();
}
} catch (IOException e) {
LOGGER.error(e.getMessage());
}
}
}
包含：獲取Class數據路徑，文件導入和導出
總結
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